Facebook employees are obsessed with the foxes that hang out on their office roof

Facebook employees are obsessed with a family of foxes that lives on their campus and hangs out on their roof.

Business Insider understands that employees have an internal channel where they share photos of the foxes.

Social media is also awash with adorable photos of the furry critters.

SAN FRANCISCO — Facebook employees are sharing their shiny new headquarters with some four-legged friends: Foxes!

For the past five years, a family of foxes have made regular appearances at the Menlo Park headquarters of the Californian social networking company, where they have captivated the thousands of employees working there.

Many of Facebook's employees have moved into Building 20 and Building 21 over the last few years — new offices next to their "classic" campus designed by famed architect Frank Gehry, with a vast rooftop park on top. And the foxes have moved over alongside them, where they are regularly spotted hanging out and chillaxing on the roof.

Business Insider understands that Facebook employees have created an internal group dedicated to the furry critters on Workplace, their in-house communications platform, where employees post about recent sightings of the foxes.

Pictures of the foxes are also shared frequently on Instagram and elsewhere on social media, under the hashtag #FacebookFox.

"I met the infamous #facebookfox this morning!" one Instagram user wrote. "My first sighting of the Facebook fox! Happy Friday!" said another.

There's also a public Facebook page that was set up by an employee back when the sightings started, "FB Fox." It now has more than 100,000 likes and is still going strong, with photos of the foxes posted every few weeks.